Use a calculator to find the sum. Round the result to two decimal places.687.92 + (-80.91)

A. -607.01
B. 768.83
C. 607.01
D. 607.92


Answer: C

Mathematics

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A. Yes B. No

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Provide an appropriate response.For what values, if any, of x (x ? 0) and n will x-n be a negative number?

What will be an ideal response?

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A. -167 B. 20

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Solve using the substitution method.x + y = -9y = -4x - 3

A. (1, -9) B. (2, -11) C. (-11, 2) D. (3, -18)

Mathematics